Wideband telescopic antenna This antenna is intended for general purpose applications where absolute measurements of field strength are not required. The antenna is a high quality unit with a knuckle joint hinge terminating with a BNC connector. Adaptors are provided for direct connection to both Series 2 and Series 5 spectrum analyzers. The length is adjustable between 12cm and 55cm. The useful bandwidth is specified by the manufacturer as 30MHz to 2GHz.